I had always believed in the concept of back roads, but now really do like them more. You might not get there as fast but the driving is much more fun and interesting, and the town you pass through are much more real. After Arizona I visited the Hoover Dam. Quite impressive. Notice the huge suspension bridge they are building just downstream. And also notice the watermark in Lake Mead, behind the dam, with the water level far, far below its historical level.